Intel
®
82870P2 (P64H2)
94
Design Guide
8.1.1
PCI/PCI-X Routing Requirements (No Hot Plug)
The P64H2 supports a large number of PCI/PCI-X configurations. The basic topology of the bus is
shown in
. Multiple slots are connected in a daisy chain topology with the device(s)
down on the motherboard at the end of the daisy chain.
documents the lengths for the
configurations Intel simulated.
NOTE:
During simulation, slot to slot lengths were held constant for some configurations. Therefore, no range
can be given for these length requirements.
Figure 8-1. Typical PCI/PCI-X Routing
Table 8-2. Intel
®
P64H2 PCI/PCI-X Configuration Length Requirements
Configuration
Intel
®
P64H2
to Slot
Slot to Slot
Slot to Device Down
33 MHz, 5 slots / 1 device down
2.0” – 7.0”
1.0”
3.0” – 6.0”
66 MHz, 4 slots / 0 devices down
6.0” – 8.0”
1.5”
N/A
100 MHz, 2 slots / 0 devices down
5.0” – 8.0”
1.0” – 1.75”
N/A
100 MHz, 2 slots / 1 device down
3.0” – 3.5”
0.75”
2.5” – 3.0”
100 MHz, 1 slot / 2 devices down
2.0” – 4.0”
(device to device) 2.0”
5.0”
133 MHz, 1 slot / 0 devices down
1.0” – 6.0”
N/A
N/A
Intel
®
P64H2
P64H2 to Slot
S lot to
Device Down
Slot
to Slot
Slot 1
Slot 2
Device
Down
Содержание Xeon
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